Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932847AbbFUBMz (ORCPT ); Sat, 20 Jun 2015 21:12:55 -0400 Received: from mail-oi0-f47.google.com ([209.85.218.47]:36821 "EHLO mail-oi0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751145AbbFUBMs (ORCPT ); Sat, 20 Jun 2015 21:12:48 -0400 Message-ID: <55860F8C.4050205@lwfinger.net> Date: Sat, 20 Jun 2015 20:12:44 -0500 From: Larry Finger User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Marcel Holtmann , Xi Ruoyao CC: "Gustavo F. Padovan" , Johan Hedberg , linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, Daniel Drake Subject: Re: [PATCH] Bluetooth: btusb: Add Realtek devices into module device table References: In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2067 Lines: 49 On 06/20/2015 04:58 PM, Marcel Holtmann wrote: > Hi Xi, > >> In 'commit a2698a9bf9b0 ("Bluetooth: btusb: Add Realtek >> 8723A/8723B/8761A/8821A support"), support of some Realtek >> devices was added to the Generic Bluetooth USB driver in kernel. >> However, these devices are not in the module device table of >> btusb.ko, so the kernel wouldn't probe them at all. >> >> To fix this, add four entries in the device table btusb_table, >> based on code from >> ('new' branch). >> >> This enables bluetooth support in the Lenovo Ideapad Yoga 13 >> which has RTL8723AU USB device, with product ID 0bda:1724. >> >> Signed-off-by: Xi Ruoyao >> --- >> drivers/bluetooth/btusb.c | 6 ++++++ >> 1 file changed, 6 insertions(+) >> >> diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c >> index 3c10d4d..dd87623 100644 >> --- a/drivers/bluetooth/btusb.c >> +++ b/drivers/bluetooth/btusb.c >> @@ -148,6 +148,12 @@ static const struct usb_device_id btusb_table[] = { >> { USB_DEVICE(0x8087, 0x0a5a), >> .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC }, >> >> + /* Realtek Bluetooth */ >> + { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01) }, >> + { USB_VENDOR_AND_INTERFACE_INFO(0x0bd5, 0xe0, 0x01, 0x01) }, >> + { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xe0, 0x01, 0x01) }, >> + { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xe0, 0x01, 0x01) }, >> + > > I highly doubt these are needed. There is a generic entry for an USB transport that is already covering these. Something changed in recent kernels, and the generic USB transport entries do not seem to be recognized in the case where a wifi and BT device share a single USB ID. As the OP's tablet has such a case, I suggest that 0bda line be accepted, but not the others. If I had a computer with an RTL8723AU, I would have a chance at debugging what changed, but sadly, that is not the case. Larry -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in Please read the FAQ at http://www.tux.org/lkml/